自动管电压选择技术(CARE KV)对急性胸痛三联征CTA图像质量及辐射剂量影响的研究  

Effects of CARE KV on CTA Image Quality and Radiation Dose of Triple Examination in the Diagnosis of Acute Chest Pain

作　　者：姜文龙 王帅 吴志斌 张崴琪 杨艺 李笑石 JIANG Wen-long;WANG Shuai;WU Zhi-bin;ZHANG Wei-qi;YANG Yi;LI Xiao-shi(Department of Radiology XiJing hospital,Xi'an 710032,Shaanxi Province,China;Department of Radiology DaXing hospital,Xi'an 710016,Shaanxi Province,China)

机构地区：[1]空军军医大学附属西京医院放射科,陕西西安710032 [2]陕西省西安大兴医院医学影像科,陕西西安710016

出　　处：《中国CT和MRI杂志》2023年第4期101-103,共3页Chinese Journal of CT and MRI

基　　金：中国红十字会基金会“影响西北公益行”之ICON科研基金项目(XM_HR_ICON_2020_10);陕西省重点研发计划项目合同(任务)(2019SF-036)。

摘　　要：目的 探究宽体探测器急性胸痛三联征CTA检查管中,自动管电压选择技术(CARE KV)对图像质量及辐射剂量的影响,探究低辐射剂量在胸痛三联征一站式CTA检查中的应用。方法 收集2020年2月至2021年10月在我院急诊或门诊因胸痛怀疑患有急性冠状动脉综合征、肺栓塞或主动脉夹层的患者90人。所有患者均进行胸痛三联征计算机断层扫描血管造影(CTA)检测。其中45名患者采用了CARE KV技术进行扫描,编为A组;其余45名患者采用常规管电压加自动管电流技术编为B组。对所有的患者冠状动脉、肺动脉及主动脉分别进行进行主观图像质量评价并记录计算所有患者的辐射剂量值;结果 A组冠状动脉共785段(25段未纳入统计),B组冠状动脉共783段(27段未纳入统计),两组冠状动脉主观图像质量在1-3级分别为776段(98.85%)、779段(99.48%);两组肺动脉各1395段,A组评价在1-2级有1358段,B组评价在1~2级有1367段;两组主动脉各135段,两组主动脉评价全部都在1-2级;上述结果两组对比均无显著性差异(P>0.05)整体辐射剂量统计A组显著低于B组,差异有统计学意义(P<0.05)。结论 应用CARE KV与自动管电流技术进行低剂量胸痛三联征CTA扫描,图像质量可满足急性胸痛患者诊断需要,同时显著降低了辐射剂量。Objective To explore the effect of CARE KV on image quality and radiation dose in the CTA triple examination in the diagnosis of acute chest pain,and to explore the application of low radiation dose in one-stop CTA examination of chest pain triad.Methods A total of 90 patients suspected of having acute coronary syndrome,pulmonary embolism or aortic dissection due to chest pain in the emergency department or outpatient department of our hospital from February 2020 to October 2021 were collected.All patients underwent chest pain triad computed tomography angiography(CTA).Among them,45 patients were scanned by the CARE KV technique,and were grouped as group A;the remaining 45 patients were scanned by conventional tube voltage(100Kvb)plus automatic tube current technology,and were grouped as group B.Subjective image quality evaluation was performed on coronary artery,pulmonary artery and aorta of all patients,and the radiation dose value of all patients was recorded and calculated;Results There were 785 segments of coronary arteries in group A(25 segments were not included in the statistics),and there were 783 segments in group B(27 segments were not included in the statistics).The subjective image quality of the coronary arteries in the two groups was 776 segments(98.85)in grades 1-3,respectively.% and 779 segments(99.48%),with no significant difference(P>0.05);each of the two groups had 1395 segments(495 central segments and 900 peripheral segments),and group A had 1358 segments in grades 1-2(There were 100%of the central 495 segments and 95.89%of the peripheral 863 segments),and there were 1367 segments in the 1-2 grades(100%of the central 495 segments and 96.89%of the peripheral 872 segments)in group B,and there was no significant difference(P>0.05);There were 135 segments in the aorta,and the evaluation of the aorta in the two groups were all in grades 1-2;the overall radiation dose statistics of group A was significantly lower than that of group B,and the difference was statistically significant(P<0.05).Conclus

关 键 词：体层摄影术 X线计算机断层扫描 胸痛三联征 肺动脉栓塞 主动脉夹层 急性冠状动脉综合征 

分 类 号：R445.3[医药卫生—影像医学与核医学]